The Overseas dual time model is designed to ensure reliable, pleasant and elegant wear in every circumstances. Its new mechanical self-winding movement, Vacheron Constantin Caliber 5110 DT, stems from several years of development and enables simultaneous reading of the two timezones by means of coaxial hands. The hours hand indicates the local timezone corresponding to the user’s current location, while the hand tipped with a triangular arrow shows the time in a reference timezone, generally known as “home time”. A 12-hour display, adjustable via the crown in both directions (position 1: local time, independent jumping adjustment; position 2: home time, dragging adjustment of both timezones and minutes), along with a day/night indication set to home time, and a pointer-type date display, adjusted and secured via a screw-lock pusher at 4 o’clock and synchronised with local time. This 234-component movement oscillates at a frequency of 4 Hz and has a comfortable 60-hour power reserve thanks to its twin barrel that also ensures its regularity.